© MMXIX Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 190625006
SF350-5
SuperFlow® 350 Regulator
SuperFlow® 350 Demand Regulator
NOTE: 135 to 150 p.s.i.g. over ambient is the
standard supply pressure to be used when ad-
justing all KMDSI helmets and band-masks
equipped with the SuperFlow® 350 regu-
lator. See "Supply Pressure Requirements
& Tables" on page APNDX-4 for recommended
pressures during use.
NOTE: When storing the helmet for any length
of time, ensure that the regulator adjustment
knob is turned “out” fully counterclockwise to
avoid stressing the bias springs and removes un-
necessary pressure on the inlet valve seat. This
will prolong the life of both the inlet valve, seat,
and bias springs.
1) Rotate the regulator adjustment knob in, to-
wards the regulator body.
2) Ensure the supply pressure is connected and
properly adjusted to 135 to 150 p.s.i.g.
3) Turn on the gas supply.
4) Rotate the adjustment knob out counterclock-
wise slowly, until a slight steady flow develops.
5) Slowly rotate the adjustment knob in clock-
wise, until the free flow stops. Lightly depress
the purge button several times and ensure the
gas flow has stopped.
6) Lightly depress the purge button. There should
be between
1/16
” and
1/8
” free travel in the button
before gas flow starts. When the button is fully
depressed, a strong surge of gas must be heard.
7) If the purge button travels less than
1/16
” or
greater than
1/8
” before free flow is heard, the de-
mand regulator requires internal adjustment,
per "1.7.1 Tuning the SuperFlow
1.2.3 Inspection of SuperFlow
®
350
Regulator Body Interior
Tools required:
•
1/4
inch Flat Blade Attachment on Torque
Screwdriver
1) Remove the demand regulator clamp by re-
moving the clamp screw.
Remove the demand regulator clamp.
2) Lift off the regulator cover and diaphragm.
3) Clean the diaphragm with the soapy solution, per
"1.3 General Cleaning & Inspection Procedures"
on page GENPRE-4 and wipe dry. Inspect the dia-
phragm for holes, tears or any signs of deteriora-
tion by holding it up to a white light and stretch-
ing and pulling. Check for a good bond between
the metal disc and the silicone. Replace the dia-
phragm if any doubt exists as to its integrity.
B
WARNING
Use only replacement diaphragms
manufactured by Kirby Morgan. Use
of other diaphragms may degrade per-
formance and may cause increased
breathing resistance. This can lead to
fatigue and the inability to work at full
capacity.
4) Inspect the interior of the demand regula-
tor body for damage, corrosion and cleanliness.
Clean the interior of the regulator body if nec-
essary per "1.1 Overpressure Relief Valve Over-
haul Procedures" on page OPRV-1.
5) Reinstall the diaphragm, cover, and clamp.
Make sure the metal parts are clean and dry. Do not
lubricate the diaphragm. Tighten the clamp screw
to the recommended torque, see "Torque Specs"
on page APNDX-19 for correct torque using a torque
screwdriver.
NOTE: Older regulator clamps, when properly
